INTRODUCTION 



he has learned during a somewhat wide experience 

 in investigating pasteurizing plants. 



If any dealers with questionable motives look in 

 this book for practical suggestions by which they 

 may be able to save milk and cream which is going 

 bad, or if they wish to learn how departmental 

 regulations can be evaded, they will be disap- 

 pointed. 



It is hoped, however, that dealers who honestly 

 desire to handle milk so that it will be safe and 

 salable will find assistance in this book. 



The author wishes to acknowledge the assistance 

 and good advice which he has received from Dr. 

 Wm. H. Park, Dr. Chas. F. Boldune, Ole Salthe 

 and James E. Thomson, and from Inspectors 

 Ryan, Lee and others in the New York City De- 

 partment of Health. Also he wishes to thank the 

 various manufacturers of dairy machinery for in- 

 formation given and illustrations supplied. 



C. H. K. 



New York, September 1, 1916. 

 iv 



